6.
USE OF FALL ARREST SYSTEM:
The fall arrest system MUST ONLY be connected to the back attaching element on the harness
provided for the purpose (”D” ring or webbing attachment extension) or to the chest anchorage points (“webbing link” or “D” link). The
chest anchorage points must imperatively be used together. The D-rings on the belt and the ventral anchorage point must only be used
for the attachment of a work positioning or retaining system and never with a fall arrest system.
During use, check regularly the adjustment and/or attachment points.
7.
ANCHORAGE STRENGTH:
The anchorage strength required is dependent on the application type. The following are the requirements of
ANSI Z359.1 for these application types:
Ÿ
Ÿ
Fall Arrest:
Anchorages selected for fall arrest systems shall have a strength capable of sustaining static loads applied in the
directions permitted by the system of atleast- 1. 5,000 lbs.(23kN) for non-certied anchorages, or 2. Two times the maximum
arresting force for certied anchorages. When more than one fall arrest system is attached to an anchorage, the strengths set
forth in (1) and (2) above shall be multiplied by the number of systems attached to the anchorage.
As Per OSHA:
Anchorages used for attachment of personal fall arrest systems shall be independent of any anchorage being used
to support or suspend platforms and capable of supporting at least 5,000 lbs.(23kN) per user attached, or be designed, installed
and used as part of a complete PFAS which maintains a safety factor of at least two, and is under the supervision of a qualied
person.
Work Positioning:
The structure to which the work positioning system is attached must sustain static loads applied in the
directions permitted by the work positioning system of at least 3,000 lbs., or twice the potential impact load, whichever is greater.
See OSHA. When more than one work positioning system is attached to an anchorage, the strengths stated above must be
multiplied by the number of work positioning systems attached to the anchorage.
Ÿ
Restraint:
Anchorages selected for restraint and travel restraint systems shall have a strength capable of sustaining static loads
applied in the directions permitted by the system of at least: 1. 1,000 lbs. (4.5 kN) for non-certied anchorages, or 2. Two times
the foreseeable force for certied anchorages. When more than one restraint and travel restraint system is attached to an
anchorage, the strengths set forth in (1) and (2) above shall be multiplied by the number of systems attached to the anchorage.
Ÿ
Rescue:
Anchorages selected for restraint and travel restraint systems shall have a strength capable of sustaining static loads
applied in the directions permitted by the system of at least: 1. 3,000 lbs. (13.3 kN) for non-certied anchorages, or 2. Five times
the foreseeable force for certied anchorages. When more than one restraint and travel restraint system is attached to an
anchorage, the strengths set forth in (1) and (2) above shall be multiplied by the number of systems attached to the anchorage.
4
ANCHORAGE & ANCHORAGE STRENGTH: Anchorage and anchorage strength requirements are dependent on the Full Body Harness. In
accordance with ANSI Z3559.1, anchorages selected for fall Arrest Systems must meet the anchorage strength requirements dened in
below:
Anchorage Strength Requirements
1
Fall Arrest
1
Restraint
1
Work Positioning
1
Rescue
Climbing
Non-Certied Anchorage
2
Certied Anchorage:
Non-Certied Anchorage:
2
Certied Anchorage:
Non-Certied Anchorage
2
Certied Anchorages:
Non-Certied Anchorages
2
Certied Anchorage:
5,000 lbs.(23kN)
2 Times the Maximum Arresting Force for Certied Anchorage
1,000 (4.5 kN)
2 times the foreseeable force for certied anchorages.
3,000 lbs (13.3 kN)
2 times the foreseeable force for certied anchorage.
3,000 lbs (13.3 kN)
5 times the foreseeable force for certied anchorage.
1 Multiple Systems:
When more than one of the dened system is attached to an anchorage, the strength dened for Non- Certied or certied
anchorage shall be multiplied by the number of systems attached to the anchorage.
2 Certied Anchorage:
An anchorage for fall arrest, positioning, restraint, or rescue systems that a qualied person certies to be capable of
supporting the potential fall force that meet the criteria for a certied anchorage prescribed in this standard.
The structure which a climbing system is attached must sustain the loads required by that
particular system. See the instructions for the climbing system for requirements.
